The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1989
Filed:
Feb. 04, 1985
Mikio Kobayashi, Kanagawa, JP;
Akira Ueno, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electronic flash photographing system transmits a timing clock signal from a camera to a flash unit through a first signal transmission path, and also transmits a plurality of information signals as a serial signal from the flash unit to the camera through a second signal transmission path in synchronism with the timing clock signal. At least when a subject is photographed, generation of the timing clock signal is stopped or transmission thereof to the first signal transmission path is interrupted. While the subject is being photographed, a light-emission stop signal is transmitted from the camera to the flash unit through the first signal transmission path.